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2013 Mid-Atlantic Severe General Discussion


Kmlwx

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What about later next week along the periphery of that ridge ejecting out of the plains. Could we have a little MCS pattern for a day or 2 in the midwest and maybe to the mid-atl?

 

That idea I think has merit. The GFS suite is quick to break the wave / bring a cutoff because the modeling is quickly propagating the MJO into phase 6-7. While possible, I think that is the more unlikely solution. Something like that would probably prevent the best thermodynamics from getting to us. The ECMWF on the other hand.... :)

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I'm pretty sure I heard thunder last night. Or at least that's what I thought the dog was barking at.

You prob did. The cell kinda just missed here but there was thunder in it.
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That idea I think has merit. The GFS suite is quick to break the wave / bring a cutoff because the modeling is quickly propagating the MJO into phase 6-7. While possible, I think that is the more unlikely solution. Something like that would probably prevent the best thermodynamics from getting to us. The ECMWF on the other hand.... :)

 

Yeahhh ok I think I see what you are saying using Alan's/raleighwx's composites for 5-6-7 in May.. Before then though I do not see how the phase 4 composite lines up with the pattern over the next few days (ie the north pacific and +PNA around day 5), but i suppose we can turn to other forcing to explain that... I'm personally been having a little trouble lining up the modeled patterns with the projected MJO propogation of late. I have different looking composites from other sources which doesnt help, but I guess alan's 5-6-7 do look similar to the euro/gfs solutions of late for later next week..

 

Though in terms of the gfs being a quick propogation into 6-7, not sure I see that on the phase diagrams..looks like it just weakens it and gets it towards 6-7 in the 11-15 day. 

GFSO_phase_full.gif

 

NCPE_BC_phase_21m_full.gif

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Of course didn't break through yesterday, but it felt like the air was a little heavy when it wasn't raining. Now that this morning has had some Sunshine, it feels a little humid outside. Very beautiful morning here all around with mostly sunny giving way to some cloudiness now as the day continues. Has one of those modest shear days where you wonder whether or not you break into sunshine and develop instability. But seems to me that widespread showers is the more likely scenario this afternoon. Some of the clouds look to be growing.

IMG_20130508_133224_zps603e8251.jpg

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STW in Balt City & Co...

 

 

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A
 
* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN BALTIMORE COUNTY IN NORTHERN MARYLAND...
  WESTERN BALTIMORE CITY IN NORTHERN MARYLAND...
  NORTHERN ANNE ARUNDEL COUNTY IN CENTRAL MARYLAND...
  EASTERN HOWARD COUNTY IN CENTRAL MARYLAND...
 
* UNTIL 415 PM EDT
 
* AT 335 PM EDT...A SEVERE THUNDERSTORM WAS DETECTED NEAR CANTON...
  AND WAS MOVING NORTH AT 10 MPH. THIS STORM IS CAPABLE OF PRODUCING
  HAIL UP TO THE SIZE OF QUARTERS.
 
* LOCATIONS IMPACTED INCLUDE...
  BOLTON HILL...
  WOODLAWN...
  DRUID HILLS PARK...
  HOWARD PARK...
  GUILFORD...
  LOCHEARN...
  FALLSTAFF...
  ROLAND PARK...
  HOMELAND...
  PIKESVILLE...
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...
 
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.
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SPC expands the slight risk a little more into our area - also LWX discussion hints at rough afternoon tomorrow. We will see.

Dramatic

Tomorrow may be too widespread/messy. Setup is ok but lacking too.

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